CN200975448Y - Tractor fixed axis planetary transmission antecedence apparatus - Google Patents
Tractor fixed axis planetary transmission antecedence apparatus Download PDFInfo
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- CN200975448Y CN200975448Y CNU2006201405788U CN200620140578U CN200975448Y CN 200975448 Y CN200975448 Y CN 200975448Y CN U2006201405788 U CNU2006201405788 U CN U2006201405788U CN 200620140578 U CN200620140578 U CN 200620140578U CN 200975448 Y CN200975448 Y CN 200975448Y
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- gear
- planet wheel
- engage
- planet
- tractor
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Abstract
The utility model relates to a tractor dead axle planet driving retrograde motion device, which mainly comprises a planet carrier, a front central gear wheel, a planet wheel, a planet wheel shaft, a back central gear wheel and a gear keeping sleeve; wherein, the circumferences of the front central gear wheel and the back central gear wheel that are arranged inside of the intracavity of the planet carrier all evenly provided with three planet wheels, which can individually be assembled to be individual part and be hanged on the back spline of the minor speed changing output shaft; the front part of the rear axle cone gear wheel shaft for the gear keeping sleeve device are in series provided with three positions of retrograde motion, advancing movement and neutrality. The utility model has the advantages of compact structure, easy disassembling, easy and convenient exchanging of other modification parts; in addition, the back arranged retrograde motion device does not change the structures of the main gear box and the minor gear box, also obtains the same retrograde motion gear amount as that of the advancing movement gear, at the same time, the accurate gear ratio of one to one can be ensured to make each gear speed of the advancing movement and the retrograde motion mutually the same; furthermore, the structure of the gear box is very simple, the accurately processing parts of the gear box are reduced, without increasing the noise of the driving series and changing the gear changing convenience of the gear box.
Description
Technical field
The utility model relates to a kind of agricultural mechanical field, particularly relates to a kind of countershaft planetary transmission backing device for tractor.It extensively is suitable for various engineer operations and uses.
Background technique
The main transmission component of tractor includes the main-gear box that is connected with motor; Described main-gear box is connected with retrograde device; Described main-gear box rear portion also is provided with auxiliary transmission.At present, the domestic employing of described retrograde device mainly contain following two kinds of forms:
First kind of form is preposition gear driven type.Be that described retrograde device is arranged in described main-gear box front portion; After the gear transmission change sense of rotation of power in described retrograde device from described motor, again power is imported described main-gear box.Above-mentioned retrograde device exists following defective: the described main-gear box body of the first is anterior to be needed to increase than large space, and to increase the twice partition wall, make described main-gear box body lengthening, the tractor wheelbase increases, increase at the precision machining position of described main-gear box body simultaneously, and then complex structure and processing cost are higher; It two strengthens rotary inertia owing to the prime part increases when being described main-gear box gear shift, causes described main-gear box gear shift difficulty; It three is the gear rotational speed height that are arranged in the retrograde device of described main-gear box front portion, and the transmission system noise increases.
Second kind of form is the middle-mounted gear transmission type.Described retrograde device is arranged in the auxiliary transmission at described main-gear box rear portion, add in the gearbox of four backward gears at eight forward gearss of composition, remove the backward gear in the described auxiliary transmission, and set up idle pulley at described auxiliary transmission low gear position, be transformed into described retrograde device thereby change sense of rotation.This retrograde device is owing to lost four forward gearss; Become eight forward gearss and add eight backward gears and add the one-level speed reducer at the auxiliary transmission rear portion, original drive mechanism has been carried out a large amount of transformations, the generalization degree is low, complex structure, and the gear number reduces simultaneously, does not satisfy usage requirement.
Thereby, more than its structures of retrograde device of existing two kinds of forms all comparatively complicated, manufacture cost is higher; And be unfavorable for giving full play to and improve various efficiency of operation effectively.
Summary of the invention
The purpose of this utility model is exactly in order to overcome above-mentioned deficiency of the prior art, provides that a kind of compact structure is reasonable, gear shift light reliable, cost of production and the low rear-mounted countershaft planetary transmission backing device for tractor that also can be combined into an individual components of transmission system noise.
The purpose of this utility model is by providing a kind of countershaft planetary transmission backing device for tractor with following structure to realize, described tractor includes main-gear box and the auxiliary transmission that is connected with motor, described main-gear box and auxiliary transmission are connected with retrograde device, described retrograde device connects a back axle bevel gear shaft, and the rear portion of described back axle bevel gear shaft is connected with the road wheel of described tractor.
Described retrograde device mainly is made up of planet carrier, preceding central gear, planet wheel, planet wheel shaft, rear center's gear and engage a gear cover.
Planet wheel behind three preceding planet wheels that described planet wheel is set to be uniformly distributed along the circumference and three.
Described planet carrier inner chamber is provided with six described planet wheel shafts, and wherein said three planet wheel shafts respectively install a described preceding planet wheel; Described its excess-three planet wheel shaft respectively installs a described back planet wheel.
Before described planet wheel with described before central gear be meshed, described planet wheel afterwards is meshed with described rear center gear.
Central gear is sleeved on the rear end of the output shaft of described secondary speed change before described; Described rear center gear set puts at described engage a gear.
Described engage a gear covering device is at back axle bevel gear shaft front end, and described engage a gear cover is connected with described rear center gear.
The first half that the mesh regional of described preceding central gear is arranged on the described preceding planet wheel facewidth is meshed; Described rear center gear meshing zone is arranged on described back the latter half of of planet wheel and is meshed.Planet wheel is meshed with described back planet wheel before described.
Described engage a gear cover can be made axial slip along described bevel gear shaft; That described engage a gear cover is provided with is retrograde, advance and neutral three axial slip positions.
Described planet carrier is provided with two groups of connecting bolts, and described connecting bolt is fixedlyed connected with described auxiliary transmission body.
Described planet wheel shaft is fixedly mounted in the axis hole of described planet carrier.
Described rear center bore middle part is provided with the engage a gear internal tooth, and described engage a gear cover front end external diameter is provided with the engage a gear soldered tooth; Described engage a gear soldered tooth is meshed with described engage a gear internal tooth and is connected.
In being provided with, described engage a gear cover front inner diameter connects tooth; The rear end of the output shaft of described secondary speed change is provided with the outer tooth that connects, connect in described tooth with described outside be connected the tooth connection that is meshed.
The utility model countershaft planetary transmission backing device for tractor can reach following beneficial effect: with the multistage commutative Gear Transmission Design is the dead axle planetary mechanism, planetary gear train is evenly arranged, can make each part stress uniform, improve stress, reduce the planet wheel load, guaranteed 1: 1 accurate velocity ratio again, promptly advancing equates fully with each grade speed of driving in the wrong direction; Such arrangement can guarantee whole retrograde device is assembled into an individual components separately, be articulated in its mounting point simply and easily, compact structure, convenient disassembly, other modification parts of being convenient to change the outfit, the Unit Installation position should drive in the wrong direction simultaneously by the back axle bottom half, and primary component all is immersed in the lubricant oil, and good lubricating condition is arranged.
Compared with prior art, advantage of the present utility model is: 1. rational in infrastructure, shortened complete machine wheelbase and main-gear box body, and reduced operating noise again; 2. planetary gear train is evenly arranged, stress is good; 3. realize 1: 1 accurate velocity ratio, advancing equates fully with each grade speed of driving in the wrong direction; 4. whole retrograde device is formed an individual components separately, and install, articulate and easy removal, and other modification parts of being convenient to change the outfit; 5. have good lubricating condition, operational safety is good.
Description of drawings
Fig. 1 is a structural drawing of the present utility model;
Fig. 2 is the B-B sectional view of Fig. 1;
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Fig. 1 and Fig. 2 show a mode of execution of the utility model countershaft planetary transmission backing device for tractor, it comprises a planet carrier 1, planet carrier 1 comprises that and arranged on left and right sides is oppositely arranged a front panel 11 and a rear sidewall 12, between a front panel 11 and the rear sidewall 12 along the circumferential direction device have 6 the band planet wheels planet wheel shafts 10; Planet wheel respectively is engaged with central gear, and central gear is installed in the center of planet carrier 1.
Each device of the outer periphery of a front panel 11 and a rear sidewall 12 has a plurality of preceding pins 6 and back pin 7, and preceding pin 6 is fixedlyed connected with planet wheel shaft 10 again with back pin 7; Cooperate by needle bearing 8 composition rollings between each planet wheel that is provided with and the planet wheel shaft 1 on 6 planet wheel shafts 10.
Central gear is set to a preceding central gear 21 and rear center's gear 22.Rear center's gear 22 is provided with internal tooth 221.6 planet wheels are set to planet wheel 92 behind 3 preceding planet wheels 91 of space along the circumferential direction and 3.Planet wheel 91 is meshed with described back planet wheel 92 before described.3 preceding planet wheels 91 are installed in the inboard of planet carrier front panel 11; Planet wheel 92 is installed in the inboard of planet carrier rear sidewall 12 after 3.
Preceding central gear 21 is sleeved on auxiliary transmission output shaft 3 rear ends, and is meshed with 3 preceding planet wheel 91 first halfs of circumference uniform distribution.Rear center's gear 22 install be supported on the engage a gear cover 14 and with 3 of circumference uniform distribution after planet wheel 92 latter half of being meshed.Make each central gear 21 preceding of per two planet wheels and rear center's gear 22 in two groups of planet wheel 92 behind 3 preceding planet wheels 91 and 3 with it along half facewidth engagement.
Connect tooth 31 outside the rear end of auxiliary transmission output shaft 3 is provided with, connect tooth 142 in the front end of engage a gear cover 14 is provided with, be connected tooth 142 in the auxiliary transmission output shaft connects tooth 31 outward and engage a gear overlaps and match.
Engage a gear cover 14 slidably is installed in back axle bevel gear shaft 13 front ends; The front end external diameter of engage a gear cover 14 is provided with engage a gear soldered tooth 141, and the internal diameter of rear center's gear is provided with engage a gear internal tooth 221; The engage a gear internal tooth 221 of rear center's gear is meshed with the engage a gear soldered tooth 141 of engage a gear cover.
A kind of countershaft planetary transmission backing device for tractor of the utility model can be assembled into an individual components separately, is articulated in easily on the secondary speed change output shaft 3 rear end splines, uses two groups of bolts, 4,5 fixing devices again on wall end face behind the auxiliary transmission body.Planet wheel shaft is fixed, promptly rear-mounted countershaft planetary transmission backing device.
The engage a gear cover 14 of the utility model countershaft planetary transmission backing device for tractor can be made axial slip along the bevel gear shaft 13 that is connected with back axle; That described engage a gear cover is provided with is retrograde, advance and neutral three axial slip shelves; Its concrete working procedure is such:
The reverse driving operating process engage a gear of tractor cover 14 is moved by neutral gear postpone; At this moment, engage a gear cover connecting key cover 142 is meshed with the engage a gear internal tooth 221 of rear center gear 22; Transmission of power exports the back axle that is connected with the tractor road wheel to by planet wheel 92 → rear center gear 22 → engage a gear cover 14 → back axle bevel gear shaft 13 behind 91 → 3 of the secondary speed change output shafts 3 → 21 → 3 preceding planet wheels of preceding central gear, through the tertiary gear transmission, the sense of rotation of power output is opposite with input, realizes the reverse driving of tractor.
The direction of advance mobility operation process engage a gear of tractor cover 14 is put reach by neutral gear; At this moment, engage a gear cover connecting key cover 142 is connected tooth 31 outward with the auxiliary transmission output shaft and is connected; Connect secondary speed change output shaft 3 and back axle bevel gear shaft 13, power is directly 3 coaxial by secondary speed change output shaft, transmit in the same way and export back axle bevel gear shaft 13 to, back axle bevel gear shaft 13 exports the back axle that is connected with the tractor road wheel to, thereby realization tractor direction of advance is travelled.
Tractor stops mobility operation process engage a gear cover 12 and is in neutral gear and puts, as shown in fig. 1; At this moment, engage a gear cover connecting key cover 142 neither is connected with rear center gear 22, also is not connected tooth 31 outward with the auxiliary transmission output shaft and is connected; Be that power is cut off, tractor travels and stops.
Whole retrograde device of the present utility model is arranged in major and minor gearbox rear portion, under the prerequisite that does not change major and minor gearbox designs, can obtain identical with the forward gears number retrograde shelves number, has simplified gearbox designs again, has shortened the complete machine wheelbase; Do not increase the power train noise, do not change the shift property of gearbox.With the multistage commutative Gear Transmission Design is the dead axle planetary mechanism, and planetary gear train is evenly arranged, can make each part stress uniform, improves stress, reduces the planet wheel load, has guaranteed 1: 1 velocity ratio again, and advancing equates fully with each grade speed of driving in the wrong direction; Such arrangement can guarantee whole retrograde device is assembled into an individual components separately, be articulated in its mounting point simply and easily, compact structure, convenient disassembly, other modification parts of being convenient to change the outfit, the Unit Installation position should drive in the wrong direction simultaneously by the back axle bottom half, and primary component all is immersed in the lubricant oil, and good lubricating condition is arranged.
Claims (7)
1. countershaft planetary transmission backing device for tractor, described tractor includes main-gear box and the auxiliary transmission that is connected with motor, described main-gear box and auxiliary transmission are connected with retrograde device, described retrograde device connects a back axle bevel gear shaft, the rear portion of described back axle bevel gear shaft is connected with the road wheel of described tractor, described retrograde device mainly is made up of planet carrier, preceding central gear, planet wheel, planet wheel shaft, rear center's gear and engage a gear cover, it is characterized in that:
A. planet wheel (92) behind three preceding planet wheels (91) that described planet wheel is set to be uniformly distributed along the circumference and three;
B. described planet carrier (1) inner chamber is provided with six described planet wheel shafts (10), and planet wheel (91) before wherein said three planet wheel shafts (10) respectively install, described other three planet wheel shafts (10) respectively install a described back planet wheel (92);
C. planet wheel (91) is meshed with described preceding central gear (21) before described, and described back planet wheel (92) is meshed with described rear center gear (22); Planet wheel (91) is meshed with described back planet wheel (92) before described;
D. central gear (21) is sleeved on the rear end of the output shaft (3) of described secondary speed change before described; Described rear center gear (22) is sleeved on the described engage a gear cover (14);
E. described engage a gear cover (14) device is at back axle bevel gear shaft (13) front end, and described engage a gear cover (14) is connected with described rear center gear (22).
2. countershaft planetary transmission backing device for tractor according to claim 1 is characterized in that: the first half that the mesh regional of described preceding central gear (21) is arranged on described preceding planet wheel (91) facewidth is meshed; The mesh regional of described rear center gear (22) is arranged on latter half of being meshed of described back planet wheel (92).
3. kind of countershaft planetary transmission backing device for tractor according to claim 1 is characterized in that: described engage a gear cover (14) can be made axial slip along described bevel gear shaft (13); That described engage a gear cover (14) is provided with is retrograde, advance and neutral three axial slip positions.
4. a kind of countershaft planetary transmission backing device for tractor according to claim 1, it is characterized in that: described planet carrier (1) is provided with two groups of connecting bolts (4), (5), fixedlys connected with described auxiliary transmission body in described connecting bolt (4), (5).
5. countershaft planetary transmission backing device for tractor according to claim 1 is characterized in that: described planet wheel shaft (10) is fixedly mounted in the axis hole of planet carrier (1).
6. countershaft planetary transmission backing device for tractor according to claim 1 is characterized in that: described rear center gear (22) endoporus middle part is provided with engage a gear internal tooth (221), and described engage a gear cover (14) front end external diameter is provided with engage a gear soldered tooth (141); Described engage a gear soldered tooth (141) is meshed with described engage a gear internal tooth (221) and is connected.
7. countershaft planetary transmission backing device for tractor according to claim 1 is characterized in that: connect tooth (142) in described engage a gear cover (14) front inner diameter is provided with; The rear end of the output shaft of described secondary speed change (3) is provided with the outer tooth (31) that connects, connect in described tooth (142) with described outside be connected tooth (31) and be meshed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201405788U CN200975448Y (en) | 2006-12-01 | 2006-12-01 | Tractor fixed axis planetary transmission antecedence apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201405788U CN200975448Y (en) | 2006-12-01 | 2006-12-01 | Tractor fixed axis planetary transmission antecedence apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200975448Y true CN200975448Y (en) | 2007-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201405788U Expired - Fee Related CN200975448Y (en) | 2006-12-01 | 2006-12-01 | Tractor fixed axis planetary transmission antecedence apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200975448Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453847C (en) * | 2006-12-01 | 2009-01-21 | 洛阳聚翔机械科技有限公司 | Countershaft planetary transmission backing device for tractor |
-
2006
- 2006-12-01 CN CNU2006201405788U patent/CN200975448Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453847C (en) * | 2006-12-01 | 2009-01-21 | 洛阳聚翔机械科技有限公司 | Countershaft planetary transmission backing device for tractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: LUOYANG POLY XIANG MACHINERY TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: NINGBO BENYE TRACTOR AUTOMOBILE MANUFACTURING CO., LTD. Effective date: 20071116 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071116 Address after: 471039 Henan province Luoyang city Jianxi District Xiyuan Road intersection Qianchuan boat days Mingyuan 3 Gate No. 401 Patentee after: Luoyang Juxiang Machinery Technology Co., Ltd. Address before: Ningbo Zhenhai District 315202 South Road camel in Zhejiang province Ningbo City No. 595 Patentee before: Ningbo Benye Tractor & Automobile Manufacture Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071114 Termination date: 20100104 |